Table of Contents
What is the speed of sound in warm air?
In warm temperatures (15 °C/59°F), the speed of sound travels at 1,220 kilometers per hour (760 miles per hour), but in the cold temperatures of (-56°C/-67°F), the sound travels at 1,056 kilometers per hour (660 miles per hour).
What is the value for the speed of sound in air?
330 m/s.
Example calculation The accepted value for the speed of sound in air is 330 m/s.
How do you measure the speed of sound in air?
SPEED=DISTANCE/TIME. To work out the speed of the sound in metres per second, divide the distance in metres by the average time in seconds. For example 170 metres divided by 0.50 seconds = 340 m/s.
How do you calculate the speed of sound and temperature?
Speed of sound c ≈ 331.3 + (0.6 × ϑ) in m/s. That gives e.g. at a temperature of ϑ = 20°C a speed of sound of: c ≈ 331.3 + (0.6 × ϑ) = 331.3 + (0.6 × 20) = 343.3 m/s….
| Temperature ϑ (theta) °C | ↔ | Speed of sound v m/s |
|---|---|---|
| Frequency f Hz | ↔ | Wavelength λ m |
What speed is the speed of sound?
about 761 mph
If we consider the atmosphere on a standard day at sea level static conditions, the speed of sound is about 761 mph, or 1100 feet/second. We can use this knowledge to approximately determine how far away a lightning strike has occurred.
How do you find the speed of sound in air GCSE?
The speed of sound in air is often measured using the following method:
- two people (person A and person B) are placed a distance apart, eg 100 metres.
- person A fires a starter’s pistol.
- person B times the difference between seeing the flash of the gun and hearing the sound – this is measured in seconds.
What is the speed of sound in gas?
Speed of Sound in Gases
| Gas | ft/s | m/s |
|---|---|---|
| Air | 1086 ft/s | 331 m/s |
| Air, 20ºC | 1125 ft/s | 343 m/s |
| Ammonia (30ºC) | 1443 ft/s | 440 m/s |
| Argon (27ºC) | 1059 ft/s | 323 m/s |
How was the speed of sound measured?
The first method is based on simply measuring the time it takes a pulse of light or sound to traverse a known distance; dividing the distance by the transit time then gives the speed. (The frequency of a wave is the number of crests that pass per second, whereas the wavelength is the distance between crests).
What is the formula for calculating speed of sound?
The equation for the speed of sound in air v=√γRTM v = γ R T M can be simplified to give the equation for the speed of sound in air as a function of absolute temperature: v=√γRTM=√γRTM(273K273K)=√(273K)γRM√T273K≈331ms√T273K. v = γ R T M = γ R T M ( 273 K 273 K ) = ( 273 K ) γ R M T 273 K ≈ 331 m s T 273 K . v=fλ.
What is the velocity of sound in air?
344 m/s
The term is commonly used to refer specifically to the speed of sound in air. At sea level, at a temperature of 21 degrees Celsius (70 degrees Fahrenheit) and under normal atmospheric conditions, the speed of sound is 344 m/s (1238 km/h or 770 mph).
How is the speed of sound in air figured out?
The speed of sound in air is approximately figured out by the formula …. speed of sound (m/s) = 331.5 + 0.60 T (°C) For example, the speed of sound in air is 386 m/s at 100 °C. The sound of speed in air is increased by 0.60 m/s for each increase of degree in air temperature.
Why does the speed of sound increase with temperature?
The sound of speed in air is increased by 0.60 m/s for each increase of degree in air temperature. The speed of sound is faster at higher temperatures because molecules collide more often.
The lower the density that of a medium, the faster the speed of sound and the higher the compressibility is, the slower the sound travels. The speed of sound in air is approximately 331.5 m/s at 0 °C or around 1200 km per hour.
How many miles per hour does a sound wave travel?
At normal atmospheric pressure and a temperature of 20 degrees Celsius, a sound wave will travel at approximately 343 m/s; this is approximately equal to 750 miles/hour.